Process for producing acetic acid from acetylene.



CHRISTIAN HANSEN MANY, ASSIGNORS TO SYNTHETIC PATENTS CO. INC

CORPORATION OF NEW YORK.

AND ANTON WEINDEL, OF. LEVERKUSEN, NEAR COLOGNE,

GER- OF NEW YORK. N. Y., A

PROCESS FOR PRODUCING ACET-IC ACID FROM ACETYLENE.

No Drawing.

To all whom it may concern:

Be it known that we, CHRISTIAN Hassnx and .Xxrox VEIN DEL, doctors of philosophy, chemists, citizens of the German Empire, residing at Lererkusen, near Cologne-on-the- Rhine, Germany, have invented new and useful Improvements in Processes for Producing Acetic Acid from Acetylene, of which the following is a specification.

our invention relates to a new and valuable process for producing acetic acid from acetylene.

This process consists in treating acetylene with a solution of a per-oxidizingagent, such as hydrogen peroxid. persulfuric acid. permonosulfuric acid (H 80 or solutions or suspensions of their saltsm the presence of mercury or mercury compounds.

in order to illustrate the new process more fully the following examples are given. the parts being by we ght:

Example 1: 10.8 parts of acetylene are passed into a mixture which has to be stirred of 250 parts of sulfuric acid (20 30 per cent), 100 parts of ammonium persulfate (95 per cent.) and 5-10. parts of mercuric ()Xid. The temperature is kept by cooling at about 30l0 C. Subsequently Zt-EZS parts of pure acetic acid can be isolated by distillation from the solution of the reaction. The mixture of the reaction can also be used for the transformation of fresh quantities of acetylene by the addition of a new quantity of persulfate without removing the acetic acid already produced.

Example 2: A stream of 10.8 parts of acetylene is passed into a suspension which has to be stirred of 116 parts of potassium persulfate'(98 per cent.) and 5 to 10 parts of mercuric oXid in about 250 parts of water or dilute ulfuric acid of 10-30 per cent. The tempe ature of the mixture of the reaction is kept by cooling at about 3040 C. :23 parts pure acetic acid are obtained. The oxidizing agent can also be gradually added in several portions to the mixture.

Example I 112 parts of hydrogen peroxid (30 per cent.) and 26 parts of acetylcnc are gradually added to a well cooled Specification of Letters Patent.

Application filed January 16, 1914.

Patented Feb. 16, 191 5.

Serial No. 812.428.

mixture of about 400 parts of sulfuric acid (2030 per cent.) and 10-20 parts of men curic oxid, while the mixture is cooled. -60 parts of pure acetic acid are thus obtained. v

The term per-oxidizing agent is used in describing the present invention as generic to such percompounds as those referred to c. 7. hydrogen peroxid, persulfuric acid and its salts. permonosulfuric acid. etc.

Instead of the mentioned mercury compounds other ones or metallic mercury itself can be used.

1. Process for producing acetic acid which comprises treating acetylene. with a peroxidizing agent and with a substance con; taining mercury.

Process for producing acetic acid which comprises treating acetylene with a per- ()XidiZing agent and with a substance con taining mercury in the presence of suifuric acid.

3. Process for producing acetic acid which comprises treating acetylene with an acid solution of a per-oxidiving agent and with a substance containing mercury.

'l. Process for producing acetic acid which comprises treating acetylene with a persulfate and with a substance containing mercury.

' 5. Process for producing aceticacid which comprises treating. acetylene with a persulfate and with a substance containing mercury in the presence of sulfuric acid.

6. Process for producing acetic acid which comprises treating acetylene with an acid solution of a persulfate and with a substance containing mercury.

7. Process for producing acetic acid which comprises introducing acetylene into. sulfuric acid containing a per-oxidizing agent and a mercury compound.

9. Process for producing acetic acid which comprises introducing acetylene into sulfuric acid containing a persulfate and a mercurycon'ipound.

i Process for producing acetic acid which com 'irises introducing acetylene into sulfuric acid containing a per-oxidizing agent In testimony whereof we have hereunto and a mercury compound at a temperature set our hands in the presence of two sub- 10 of about BO-40 C. scribing witnesses.

10. Process for producing acetic acid CHRISTIAN HANSEN. which comprises introducing acetylene into ANTON WEINDEL.

sulfuric acid containing a persulfate and a Vitnesses:

mercury compound, at a temperature of HANS BIKECKNER about 3040 C. HERMANN VON KILEY. 

